Making (threaded) game server in C++/WinSock

I have a game I am working on in C++ and OpenGL. I have made a threaded server that right now accepts clients (the game) and receives messages from them. Right now the game only sends messages. I want both the game and server to be able to send and receive, but I'm not sure the best way to go about it. I was considering using a thread for sending and one for receiving, both on the same socket. Right now the game runs in a single thread, and the server makes a separate thread for each client.

Looking for suggestions on how to go about it for the game as well as the server (unless your suggesti开发者_运维问答on is the same for both). Any questions, feel free to ask :)

Thanks!

What you need to do is set up an outgoing queue of messages for each client. Say you have 2 clients connected to the server, one being serviced by thread A and the other by thread B. Thread A should do a WaitOnMultipleObjects() on its socket and on a semaphore/mutex/condition variable for its queue. That way, if it gets something in its queue, it can wake up and send it out. If it gets a message from the client that it needs no give to client B, it will process that message and put it in thread B's outgoing queue.

This is a very simple synchronization scheme. If your game is very complex or massive, you will have to do something much more clever than this.

Don't use threads in a game server. Many professional, AAA game servers are single-threaded - every one I've ever seen, in fact.

Consider using Boost.ASIO that implements this well with a C++ API (allowing many different approaches besides just asynchronous I/O). There are plenty of tutorials. However, for the absolute highest performance, you should probably not use threads.